CN105007116B - Fast fibre failure monitoring system - Google Patents
Fast fibre failure monitoring system Download PDFInfo
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- CN105007116B CN105007116B CN201410159847.4A CN201410159847A CN105007116B CN 105007116 B CN105007116 B CN 105007116B CN 201410159847 A CN201410159847 A CN 201410159847A CN 105007116 B CN105007116 B CN 105007116B
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Abstract
The invention discloses a kind of fast fibre failure monitoring systems, including central machine room, central machine room has the optical line terminal of multiple operators, branch node and the ONT Optical Network Terminal of user, it is trunk optical fiber between optical line terminal and branch node, branch node and ONT Optical Network Terminal are profile fiber, possess respective optical line terminal by the different operator of trunk optical fiber and connects different trunk optical fibers, different trunk optical fibers reaches identical branch node from identical central machine room, operator is selected by selection specific wavelength, use the extra trunk optical fiber monitoring network in identical optical cable.Through the invention, user can realize the monitoring to every other profile fiber by the monitoring of a profile fiber, the monitoring period of the whole network can be effectively reduced, to realize fast slowdown monitoring by selecting specific wavelength unrestricted choice operator.
Description
Technical field
The present invention relates to optical communication networks to propose a kind of simple, quick specific to the failure monitoring system of fiber optic network
The Intelligent optical fiber failure monitoring system suitable for multi-operator environment.
Background technique
Along with copper matting into paces, the laying of fiber to the home, fiber to the floor at present, Fiber To The Curb network is complete
Ball is unfolded on a large scale, and passive optical network is mainstream technology therein.Simultaneously as the demand and wavelength-division to more high bandwidth are multiple
With technology rapid progress, Wave division multiplexing passive optical network（WDM-PON）It is considered as most promising next-generation broadband access network
Network, especially for the user for needing high bandwidth and high security（Especially large enterprise, data center traffic etc.）.WDM- simultaneously
PON is capable of providing symmetrical ultra high bandwidth, therefore can easily solve the growing capacity requirement of Mobile backhaul.It is another
Aspect, in order to reduce possible service disruption, fault detection and positioning is may be implemented in the recovery time one kind for shortening fiber failure
Effective monitoring solution is essential.
At the same time, multi-operator environment is supported to become more and more important.Including regulatory agency, operator and infrastructure
Supply commercial city is paid close attention to very much, this is because multi-operator environment provides and freely shares network infrastructure, is conducive to different nets
Network provider and service supplier, the diversity promoted competition with market.Many countries have begun adjusting or regulation optical fiber connects
Enter the new policy of the multi-operator environment of network.For example, the Open Access Journals from EU Committee about national assistance
The policy of (open access), currently in formulation.In China, standard GB/T 50846-2012《Residential quarter and live
Residence builds inner fiber to family communications facility engineering design code》It can it has been specified that the optical access network of any emerging laying is necessary
To support the access of different operators.Realize that the traditional Optical Access Network framework needs of multi-operator environment change, phase
That answers also proposed new requirement to network monitoring system.
Summary of the invention
1, the purpose of the present invention.
The present invention provides a kind of Wave division multiplexing passive optical networks suitable for multi-operator environment（WDM PON）Intelligence
Monitoring system supports the access of different operators, quick monitoring network failure.
2, the technical solution adopted in the present invention.
Fast fibre failure monitoring system, including central machine room, central machine room have the optical line terminal of multiple operators with
And monitoring system, branch node and the ONT Optical Network Terminal of user, optical line terminal and branch that multiple optical line terminals are shared
It is trunk optical fiber between node, branch node and ONT Optical Network Terminal are profile fiber, and by trunk optical fiber, different operators is gathered around
There is respective optical line terminal to connect different trunk optical fibers, different trunk optical fibers reaches identical from identical central machine room
Branch node selects operator by selection specific wavelength, uses the extra trunk optical fiber monitoring network in identical optical cable.
Further, MxN array waveguide grating is used at the branch node, M is input port sum, and connection is different
The trunk optical fiber of operator and optical fiber for monitoring, N are delivery outlet sum, are connected by different profile fibers different
ONT Optical Network Terminal.
Further, trunk optical fiber is laid with jointly in identical optical cable.
Further, wavelength-division multiplex can be used in the passive network.
Further, wavelength-division multiplex and time division multiplexing mixing can also be used in the passive network.
Further, profile fiber is included in identical optical cable, when reaching corresponding ONT Optical Network Terminal, from optical cable
Removing, the traceable every other profile fiber of profile fiber that monitoring connects the ONT Optical Network Terminal farthest compared with central machine room may
The failure of generation.
Further, monitoring wavelength can choose any one Free Spectral Range, such as select different from data-signal
Free Spectral Range can have less influence to data-signal.
3, beneficial effects of the present invention.
Through the invention, user can pass through profile fiber by selecting specific wavelength unrestricted choice operator
Monitoring can realize the monitoring to every other profile fiber, the monitoring period of the whole network can be effectively reduced, to realize
Fast slowdown monitoring.
Detailed description of the invention
The monitoring system architecture of the WDM-PON for being applicable in multi-operator environment Fig. 1 proposed by the invention.
The structural schematic diagram of Fig. 2 splitting node.
The Wavelength Assignment example of Fig. 3 WDM-PON of the present invention.
Specific embodiment
In order to enable the auditor especially public of Patent Office that technical spirit of the invention is more clearly understood and have
Beneficial effect, applicant will elaborate by way of examples below, but be not to this hair to the description of embodiment
The limitation of bright scheme, the made only formal but not substantive equivalent transformation of any design according to the present invention are all answered
It is considered as technical solution of the present invention scope.
Embodiment 1
As shown in Figure 1, present invention employs Wave division multiplexing passive optical networks（WDM PON）More trunk optical fibers mode branch
Multi-operator environment is held, user can be by selecting specific wavelength unrestricted choice operator.The program extends also to other
PON based on WDM technology, such as wavelength-division multiplex and the mixed passive optical network (TWDM PON) etc. that is time-multiplexed.Different fortune
Seeking quotient usually can be with Sharing Center's computer room（central office CO）Cost is saved, different operators possesses respective
Optical line terminal (OLT) connects different trunk optical fibers.Trunk optical fiber refers to central machine room to the fiber segment of branch node.Different
Trunk optical fiber reaches identical branch node from identical central machine room, may be embodied in identical optical cable and is laid with jointly.This
Sample we can use the extra trunk optical fiber monitoring network in identical optical cable.For the major failure of optical cable, such as send out
Raw fracture or serious bending, can effectively monitor.Due to not needing to scan one by one to each trunk optical fiber, a light
Fine monitoring can monitor all other optical fiber in identical optical cable, this monitoring velocity being considerably improved simultaneously.?
MxN array waveguide grating is used at branch node.M is input port sum, connects the trunk optical fiber of different operators and is used for
The optical fiber of monitoring.N is delivery outlet sum, connects different ONT Optical Network Terminals (ONT) by different profile fibers.ONT is located
In user terminal.Profile fiber refers to the fiber segment between ONT and branch node.Usual profile fiber also may be embodied in identical
In optical cable, when reaching corresponding ONT, removed from optical cable.A profile fiber therein in this way will be all by other
ONT eventually arrives at the ONT farthest from branch node（The profile fiber of connection ONT32 as shown in Figure 1）.As long as we monitor
The profile fiber can track the failure that every other profile fiber may occur.So in the present invention, to the distribution
Monitoring signals are injected in optical fiber, so that it may effectively monitor the failure of every other profile fiber and its judge the position that failure occurs
It sets.Simultaneously because the monitoring to a profile fiber is so that monitoring of the realization to every other profile fiber, can effectively drop
The monitoring period of low the whole network, to realize fast slowdown monitoring.
Embodiment 2
Shown in Fig. 1,3 different operators are linked into 32 ONT Optical Network Terminals, and user is by selecting different arrival light
The wavelength of network terminal ONT selects different operators.
WhereinIt indicates from operator j（In this instance, 1≤j≤3）The wavelength of sending, ONT Optical Network Terminal ONT1 is such as
Fruit selects wavelengthThe wavelength 1 for having selected the Optical Network Terminal 1 (OLT1) of operator to issue is indicated, if selection wavelength
The wavelength 2 for having selected the Optical Network Terminal 2 (OLT2) of operator to issue is indicated, if selection wavelengthExpression has selected fortune
Seek the wavelength 3 that the Optical Network Terminal 3 (OLT3) of quotient issues.WhereinFor the monitoring wavelength that optical time domain reflectometer issues, the wave
Length can be by branch node（Shown in Fig. 2）In array waveguide grating the 4th input port enter, go out from the 32nd delivery outlet, by most
Long profile fiber reaches ONT Optical Network Terminal 32（ONT32）.Fig. 3 shows the Wavelength Assignment of the example.Array waveguide grating is all
There are multiple Free Spectral Ranges（FSR）, two FSR therein can be used for uplink（That is the direction ONT to OLT）And downlink is (i.e.
The direction OLT to ONT) data it is current.It can choose any one Free Spectral Range as monitoring wavelength（FSR）In wavelength
3.If selecting a Free Spectral Range different from data-signal（FSR）, the interference to data-signal can be reduced.
Claims (5)
1. a kind of fast fibre failure monitoring system, it is characterised in that：Including central machine room, central machine room has multiple operators
Monitoring system, branch node and the ONT Optical Network Terminal of user that optical line terminal and multiple optical line terminals are shared, light
It is trunk optical fiber between road terminal and branch node, branch node and ONT Optical Network Terminal are profile fiber, not by trunk optical fiber
Same operator possesses respective optical line terminal and connects different trunk optical fibers, selects operator by selection specific wavelength,
Different trunk optical fibers reaches identical branch node from identical central machine room, is laid with jointly included in identical optical cable,
Use the extra trunk optical fiber monitoring network in identical optical cable；Profile fiber is included in identical optical cable, reaches phase
It when the ONT answered, is removed from optical cable, a profile fiber therein will be eventually arrived at by other all ONT from branch
The farthest ONT of node monitors the profile fiber and tracks the failure that every other profile fiber may occur.
2. the fast fibre failure monitoring system according to claim 1, it is characterised in that：At the branch node
Using MxN array waveguide grating, M is input port sum, connects the trunk optical fiber of different operators and the light for monitoring
Fibre, N are delivery outlet sum, and different ONT Optical Network Terminals is connected by different profile fibers.
3. the fast fibre failure monitoring system according to claim 1, it is characterised in that：The trunk optical fiber is nothing
Wavelength-division multiplex can be used in source network.
4. the fast fibre failure monitoring system according to claim 1, it is characterised in that：The trunk optical fiber is nothing
Wavelength-division multiplex and time division multiplexing mixing can be used in source network.
5. the fast fibre failure monitoring system according to claim 2, it is characterised in that：The monitoring distribution light
Fibre, which tracks monitoring wavelength in the failure that every other profile fiber may occur, can choose any one Free Spectral Range.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410159847.4A CN105007116B (en) | 2014-04-21 | 2014-04-21 | Fast fibre failure monitoring system |
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| CN201410159847.4A CN105007116B (en) | 2014-04-21 | 2014-04-21 | Fast fibre failure monitoring system |
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| CN105007116A CN105007116A (en) | 2015-10-28 |
| CN105007116B true CN105007116B (en) | 2018-11-30 |
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Citations (4)
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|---|---|---|---|---|
| CN101964682A (en) * | 2010-10-22 | 2011-02-02 | 华为技术有限公司 | Distributed optical fiber fault locating method and system |
| CN102104422A (en) * | 2009-12-16 | 2011-06-22 | 中国电信股份有限公司 | System and method for monitoring quality of optical link of passive optical network |
| CN102665152A (en) * | 2012-05-11 | 2012-09-12 | 武汉邮电科学研究院 | Novel wide-area coverage hybrid wavelength-time division multiplexing passive optical network system |
| CN103023559A (en) * | 2012-12-27 | 2013-04-03 | 上海交通大学 | WDM-PON (wavelength-division-multiplexing passive optical network) system based on resource sharing protecting mechanism and method for protecting WDM-PON system based on resource sharing protecting mechanism |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459473B (en) * | 2007-12-14 | 2012-01-25 | 华为技术有限公司 | Optical beam splitter, optical beam combiner and point-to-multipoint network system |
| CN102594452A (en) * | 2012-03-15 | 2012-07-18 | 武汉光迅科技股份有限公司 | Self diagnosis passive optical network system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104422A (en) * | 2009-12-16 | 2011-06-22 | 中国电信股份有限公司 | System and method for monitoring quality of optical link of passive optical network |
| CN101964682A (en) * | 2010-10-22 | 2011-02-02 | 华为技术有限公司 | Distributed optical fiber fault locating method and system |
| CN102665152A (en) * | 2012-05-11 | 2012-09-12 | 武汉邮电科学研究院 | Novel wide-area coverage hybrid wavelength-time division multiplexing passive optical network system |
| CN103023559A (en) * | 2012-12-27 | 2013-04-03 | 上海交通大学 | WDM-PON (wavelength-division-multiplexing passive optical network) system based on resource sharing protecting mechanism and method for protecting WDM-PON system based on resource sharing protecting mechanism |
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